The passenger who tackled a suspected terrorist on Northwest Airlines Flight 253 said Saturday that he’s “happy” to be alive.

Jasper Schuringa, a video director and producer from Amsterdam, told CNN how he helped the cabin crew to subdue Umar Farouk Abdulmutallab, the 23-year-old who reportedly ignited a small explosive device on board the plane Friday as it prepared to land in Detroit.

Schuringa said he heard a sound that reminded him of a firecracker and someone yelling, “Fire! .......Fire!”